3/4+(-1/4)=1/2
-1/4+2=7/4
1/2+7/4=9/4
Donc :
9/4
1/2. 7/4
3/4. -1/4. 2
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Verified answer
3/4+(-1/4)=1/2
-1/4+2=7/4
1/2+7/4=9/4
Donc :
9/4
1/2. 7/4
3/4. -1/4. 2
Verified answer